Cita APA (7th ed.)

Zikmund, W. G., Babin, B. J., Carr, J. C., & Griffin, M. (2013). Business research methods (9th edition.). Cengage Learning Asia Pte Ltd.

Cita Chicago (17th ed.)

Zikmund, William G., Barry J. Babin, John C. Carr, i Mitch Griffin. Business Research Methods. 9th edition. Singapore: Cengage Learning Asia Pte Ltd, 2013.

Cita MLA (8th ed.)

Zikmund, William G., et al. Business Research Methods. 9th edition. Cengage Learning Asia Pte Ltd, 2013.